Here you can see a few examples of the several hundred pieces Susana Wald and Ludwig Zeller have made in collaboration. They call their pieces Mirages. The elaboration of these pieces begins with collage by Zeller and follows with drawing and painting by Wald.
Since 2007, Susana Wald also works in collaboration with Deborah Barnett, of Toronto.They call these pieces Reverberations. In this collaboration both artists use the same materials: chalks, acrylic washes and acrylic paint.